Details
| Original language | English |
|---|---|
| Article number | 109158 |
| Journal | International journal of fatigue |
| Volume | 201 |
| Early online date | 5 Jul 2025 |
| Publication status | Published - Dec 2025 |
Abstract
Multi-principal element alloys (MPEA) have gathered significant attention in the scientific community due to their versatility and design concepts. The Fe30Mn10Co10Cr (at.-%) MPEA system revealed outstanding mechanical properties, owing to the activation of multiple strengthening mechanisms. In this MPEA system, the formation of vanadium carbides was found to be efficient to enhance the strength and to provide further design flexibility. However, the low-cycle fatigue behavior has not yet been investigated. To address this, a fully recrystallized, single-phase face-centered cubic (fcc) structure and a recrystallized and aged state that was strengthened by a uniform distribution of 6.5 % nanosized vanadium carbides were evaluated. It was revealed that the aged samples exhibited a notable improvement in cyclic fatigue performance. The precipitation of vanadium carbides led to a reduction in solute carbon content in the fcc matrix, which in turn resulted in the transformation-induced plasticity effect becoming the dominant deformation mechanism in the aged samples. This was coupled with a decrease in plastic strain amplitude and an increase in slip reversibility. As a result, the number of cycles to failure in the low-cycle fatigue regime increased by 40.8 % to 62.1 %, facilitating the concurrent optimization of both tensile and fatigue properties.
Keywords
- deformation mechanisms, low-cycle fatigue, multi-principal element alloys, stacking fault energy, vanadium carbides
ASJC Scopus subject areas
- Mathematics(all)
- Modelling and Simulation
- Materials Science(all)
- General Materials Science
- Engineering(all)
- Mechanics of Materials
- Engineering(all)
- Mechanical Engineering
- Engineering(all)
- Industrial and Manufacturing Engineering
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In: International journal of fatigue, Vol. 201, 109158, 12.2025.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Influence of vanadium carbides and stacking fault energy on the low-cycle fatigue behavior of a face-centered cubic multi-principal element alloy
AU - Oppermann, Felix
AU - Hinte, Christian
AU - Wackenrohr, Steffen
AU - Krupp, Ulrich
AU - Maier, Hans Jürgen
AU - Haase, Christian
N1 - Publisher Copyright: © 2025 The Authors
PY - 2025/12
Y1 - 2025/12
N2 - Multi-principal element alloys (MPEA) have gathered significant attention in the scientific community due to their versatility and design concepts. The Fe30Mn10Co10Cr (at.-%) MPEA system revealed outstanding mechanical properties, owing to the activation of multiple strengthening mechanisms. In this MPEA system, the formation of vanadium carbides was found to be efficient to enhance the strength and to provide further design flexibility. However, the low-cycle fatigue behavior has not yet been investigated. To address this, a fully recrystallized, single-phase face-centered cubic (fcc) structure and a recrystallized and aged state that was strengthened by a uniform distribution of 6.5 % nanosized vanadium carbides were evaluated. It was revealed that the aged samples exhibited a notable improvement in cyclic fatigue performance. The precipitation of vanadium carbides led to a reduction in solute carbon content in the fcc matrix, which in turn resulted in the transformation-induced plasticity effect becoming the dominant deformation mechanism in the aged samples. This was coupled with a decrease in plastic strain amplitude and an increase in slip reversibility. As a result, the number of cycles to failure in the low-cycle fatigue regime increased by 40.8 % to 62.1 %, facilitating the concurrent optimization of both tensile and fatigue properties.
AB - Multi-principal element alloys (MPEA) have gathered significant attention in the scientific community due to their versatility and design concepts. The Fe30Mn10Co10Cr (at.-%) MPEA system revealed outstanding mechanical properties, owing to the activation of multiple strengthening mechanisms. In this MPEA system, the formation of vanadium carbides was found to be efficient to enhance the strength and to provide further design flexibility. However, the low-cycle fatigue behavior has not yet been investigated. To address this, a fully recrystallized, single-phase face-centered cubic (fcc) structure and a recrystallized and aged state that was strengthened by a uniform distribution of 6.5 % nanosized vanadium carbides were evaluated. It was revealed that the aged samples exhibited a notable improvement in cyclic fatigue performance. The precipitation of vanadium carbides led to a reduction in solute carbon content in the fcc matrix, which in turn resulted in the transformation-induced plasticity effect becoming the dominant deformation mechanism in the aged samples. This was coupled with a decrease in plastic strain amplitude and an increase in slip reversibility. As a result, the number of cycles to failure in the low-cycle fatigue regime increased by 40.8 % to 62.1 %, facilitating the concurrent optimization of both tensile and fatigue properties.
KW - deformation mechanisms
KW - low-cycle fatigue
KW - multi-principal element alloys
KW - stacking fault energy
KW - vanadium carbides
UR - http://www.scopus.com/inward/record.url?scp=105010507620&partnerID=8YFLogxK
U2 - 10.1016/j.ijfatigue.2025.109158
DO - 10.1016/j.ijfatigue.2025.109158
M3 - Article
AN - SCOPUS:105010507620
VL - 201
JO - International journal of fatigue
JF - International journal of fatigue
SN - 0142-1123
M1 - 109158
ER -